DTC C0030:07/C0031:07/C0031:29/C0031:2F/C0031:64/C0033:07/C0034:07/C0034:29/C0034:2F/C0034:64/C0036:07/C0037:07/C0037:29/C0037:2F/C0037:64/C0039:07/C003A:07/C003A:29/C003A:2F/C003A:64 [DSC HU/CM]

id040262906100

DTC

C0030:07

LF ABS sensor rotor

C0031:07

LF ABS wheel-speed sensor/ABS sensor rotor

C0031:29

C0031:2F

C0031:64

C0033:07

RF ABS sensor rotor

C0034:07

RF ABS wheel-speed sensor/ABS sensor rotor

C0034:29

C0034:2F

C0034:64

C0036:07

LR ABS sensor rotor

C0037:07

LR ABS wheel-speed sensor/ABS sensor rotor

C0037:29

C0037:2F

C0037:64

C0039:07

RR ABS sensor rotor

C003A:07

RR ABS wheel-speed sensor/ABS sensor rotor

C003A:29

C003A:2F

C003A:64

DETECTION CONDITION

•  C0030:07, C0033:07, C0036:07, C0039:07

―  Periodic abnormality is detected in the signal wave pattern from the ABS wheel-speed sensors

•  C0031:07, C0034:07, C0037:07, C003A:07

―  A large, sudden change in the wheel speed-signal is detected

•  C0031:29, C0034:29, C0037:29, C003A:29

―  While the vehicle is traveling at a speed of 10 km/h {6.2 mph} or more, no signal in any of the four wheels or an extremely low vehicle speed signal is detected

•  C0031:2F, C0034:2F, C0037:2F, C003A:2F

―  The wheel speed or acceleration speed in any of the 4 wheels is not within the specification

―  ABS control continues to operate for 28 s or more

•  C0031:64, C0034:64, C0037:64, C003A:64

―  While the vehicle is traveling at a speed of 20 km/h {12 mph} or more, an extremely high vehicle speed signal in any of the four wheels is detected

FAIL-SAFE FUNCTION

Refer to DTC TABLE. (See DTC TABLE [DSC HU/CM].)

POSSIBLE CAUSE

•  Short to GND in wiring harness between ABS wheel-speed sensor and DSC HU/CM

•  Excessive clearance between the ABS wheel-speed sensor and sensor rotor

•  ABS wheel-speed sensor malfunction

•  ABS sensor rotor malfunction (missing ABS sensor rotor teeth due to foreign material obstruction)

•  ABS sensor rotor installation malfunction (If the ABS sensor rotor is installed at an angle, it may cause output of abnormal wave pattern at high speeds)

•  Continuous ABS operation

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT ABS WHEEL-SPEED SENSOR OUTPUT

•  Using the M-MDS, perform the PID inspection as followings:
(See PID/DATA MONITOR INSPECTION [DSC HU/CM].)

―  WSPD_SEN_LF

―  WSPD_SEN_LR

―  WSPD_SEN_RF

―  WSPD_SEN_RR

•  Drive the vehicle.

•  Are the vehicle speeds approximately the same?

Yes

Go to Step3.

No

Go to the next step.

2

INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Disconnect the ABS wheel-speed sensor connector.

•  Inspect for continuity as followings:

―  RF ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5)

―  LF ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5)

―  RR ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5)

―  LR ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5)

•  Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector in the followings:

•  RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C

•  LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ

•  RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X

•  LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O

If there is a common connector:

•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

•  Repair or replace the malfunctioning part.

If there is no common connector:

•  Repair or replace the wiring harness which has a short to ground.

Go to Step5.

No

Go to the next step.

3

INSPECT CLEARANCE between the ABS wheel-speed sensor and sensor rotor

•  Measure the clearance between the ABS wheel-speed sensor and the ABS sensor rotor.
(See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.)

(See REAR ABS WHEEL-SPEED SENSOR INSPECTION.)

•  Is the clearance normal?

Yes

Go to the next step.

No

Replace the malfunction part, then go to Step5.

4

VISUALLY INSPECT ABS SENSOR ROTOR

•  VISUALLY INSPECT the ABS SENSOR ROTOR FOR FOREIGN MATERIAL ADHERING OR IMPROPER INSTALLATION.

•  Is the ABS SENSOR ROTOR normal?

Yes

Go to the next step.

No

Replace the ABS sensor rotor, then go to the next step.

•  Front ABS sensor rotor (front wheel hub)
(See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.)

•  Rear ABS sensor rotor (rear wheel hub component)
(See WHEEL HUB COMPONENT REMOVAL/INSTALLATION [REAR BRAKE (DISC)].)

5

VERIFY DTC TROUBLESHOOTING COMPLETED

•  Using the M-MDS, clear the DTC from the DSC HU/CM.
(See CLEARING DTC [DSC HU/CM].)

•  Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more.

•  Using the M-MDS, perform the DSC HU/CM DTC inspection.
(See DTC INSPECTION [DSC HU/CM].)

•  Is the same DTC present?

Yes

Repeat the inspection from Step1.

If the malfunction recurs, replace the DSC HU/CM, then go to the next step.

(See DSC HU/CM REMOVAL/INSTALLATION [L.H.D.].)

(See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)

No

Go to the next step.

6

VERIFY NO DTC IS PRESENT

•  Are any DTCs present?

Yes

Go to applicable DTC inspection.

(See DTC TABLE [DSC HU/CM].)

No

DTC troubleshooting completed.

DTC	C0030:07	LF ABS sensor rotor
	C0031:07	LF ABS wheel-speed sensor/ABS sensor rotor
	C0031:29
	C0031:2F
	C0031:64
	C0033:07	RF ABS sensor rotor
	C0034:07	RF ABS wheel-speed sensor/ABS sensor rotor
	C0034:29
	C0034:2F
	C0034:64
	C0036:07	LR ABS sensor rotor
	C0037:07	LR ABS wheel-speed sensor/ABS sensor rotor
	C0037:29
	C0037:2F
	C0037:64
	C0039:07	RR ABS sensor rotor
	C003A:07	RR ABS wheel-speed sensor/ABS sensor rotor
	C003A:29
	C003A:2F
	C003A:64
DETECTION CONDITION		• C0030:07, C0033:07, C0036:07, C0039:07 ― Periodic abnormality is detected in the signal wave pattern from the ABS wheel-speed sensors • C0031:07, C0034:07, C0037:07, C003A:07 ― A large, sudden change in the wheel speed-signal is detected • C0031:29, C0034:29, C0037:29, C003A:29 ― While the vehicle is traveling at a speed of 10 km/h {6.2 mph} or more, no signal in any of the four wheels or an extremely low vehicle speed signal is detected • C0031:2F, C0034:2F, C0037:2F, C003A:2F ― The wheel speed or acceleration speed in any of the 4 wheels is not within the specification ― ABS control continues to operate for 28 s or more • C0031:64, C0034:64, C0037:64, C003A:64 ― While the vehicle is traveling at a speed of 20 km/h {12 mph} or more, an extremely high vehicle speed signal in any of the four wheels is detected
FAIL-SAFE FUNCTION		Refer to DTC TABLE. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		• Short to GND in wiring harness between ABS wheel-speed sensor and DSC HU/CM • Excessive clearance between the ABS wheel-speed sensor and sensor rotor • ABS wheel-speed sensor malfunction • ABS sensor rotor malfunction (missing ABS sensor rotor teeth due to foreign material obstruction) • ABS sensor rotor installation malfunction (If the ABS sensor rotor is installed at an angle, it may cause output of abnormal wave pattern at high speeds) • Continuous ABS operation

Step	Inspection		Action
1	INSPECT ABS WHEEL-SPEED SENSOR OUTPUT • Using the M-MDS, perform the PID inspection as followings: (See PID/DATA MONITOR INSPECTION [DSC HU/CM].) ― WSPD_SEN_LF ― WSPD_SEN_LR ― WSPD_SEN_RF ― WSPD_SEN_RR • Drive the vehicle. • Are the vehicle speeds approximately the same?	Yes	Go to Step3.
1		No	Go to the next step.
2	INSPECT ABS WHEEL-SPEED SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Disconnect the ABS wheel-speed sensor connector. • Inspect for continuity as followings: ― RF ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5) ― LF ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5) ― RR ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5) ― LR ABS wheel-speed sensor terminal A (wiring harness-side)—body ground (SKYACTIV-G 1.3, SKYACTIV-G 1.5) • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector in the followings: • RF ABS wheel-speed sensor terminal A—DSC HU/CM terminal C • LF ABS wheel-speed sensor terminal A—DSC HU/CM terminal AJ • RR ABS wheel-speed sensor terminal B—DSC HU/CM terminal X • LR ABS wheel-speed sensor terminal B—DSC HU/CM terminal O If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step5.
2		No	Go to the next step.
3	INSPECT CLEARANCE between the ABS wheel-speed sensor and sensor rotor • Measure the clearance between the ABS wheel-speed sensor and the ABS sensor rotor. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.) • Is the clearance normal?	Yes	Go to the next step.
3		No	Replace the malfunction part, then go to Step5.
4	VISUALLY INSPECT ABS SENSOR ROTOR • VISUALLY INSPECT the ABS SENSOR ROTOR FOR FOREIGN MATERIAL ADHERING OR IMPROPER INSTALLATION. • Is the ABS SENSOR ROTOR normal?	Yes	Go to the next step.
4		No	Replace the ABS sensor rotor, then go to the next step. • Front ABS sensor rotor (front wheel hub) (See WHEEL HUB, STEERING KNUCKLE REMOVAL/INSTALLATION.) • Rear ABS sensor rotor (rear wheel hub component) (See WHEEL HUB COMPONENT REMOVAL/INSTALLATION [REAR BRAKE (DISC)].)
5	VERIFY DTC TROUBLESHOOTING COMPLETED • Using the M-MDS, clear the DTC from the DSC HU/CM. (See CLEARING DTC [DSC HU/CM].) • Start the engine and drive the vehicle at 10 km/h {6.2 mph} or more. • Using the M-MDS, perform the DSC HU/CM DTC inspection. (See DTC INSPECTION [DSC HU/CM].) • Is the same DTC present?	Yes	Repeat the inspection from Step1. If the malfunction recurs, replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
5		No	Go to the next step.
6	VERIFY NO DTC IS PRESENT • Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
6	VERIFY NO DTC IS PRESENT • Are any DTCs present?	No	DTC troubleshooting completed.